SOLUTION: Jennifer is twice as old as Ramon. The sum of their ages 7 yrs ago was 13. How old are they now?

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Question 376013: Jennifer is twice as old as Ramon. The sum of their ages 7 yrs ago was 13. How old are they now?
Answer by robertb(5830) About Me  (Show Source):
You can put this solution on YOUR website!
j = 2r,
(j - 7) + (r - 7) = 13, or j + r = 27.
Then 2r + r = 27, or
3r = 27, or
r = 9, the age of ramon, and
j = 2r = 18, the age of jennifer.